How would I go about dyeing a button down shirt? I have a few beater oxfords I feel like fucking up. Suggestions?

Wash it very well
buy dye
follow instructions on dye

cotton fabric is pretty easy to dye...some colors may have trouble being perfectly even (most noticeable across big sections like the back). Best way to avoid this is to make sure the fabric is already a little wet going into the bath, make sure there is enough dye, and make sure you agitate it enough.

I'd go with black coffee (perhaps extra strong), you generally end up with shades a few stages lighter than the solution you're dyeing with. Might be different if you use mordants and all of that fun stuff, but most people that use natural-type dyes are trying to avoid those chemicals

This thread inspired me.
Going to dye my old pair of all white stan smiths, probably brick red or something.
Has anyone tried to soak a white buttondown in red wine and leave it overnight? Could be fun, but it'll probably fade lots on washes though right?

When you dye stuff without an actual dye that reacts with the fabric, you are just staining it basically which will inevitably fade in time, and you probably won't be happy with your results.
Just use procion mx, its cheap, reliable, safe, you can get any color, and the process is very easy to do.

I just used some cheap watered down mars black Blick acrylic with a squirt of white.

I don't want to demean your efforts for doing this but this DIY styling project does not make any sense to me. Why ruin an expensive designer sneaker.? The original idea is not attractive in the first place and by only achieving mediocre result of the DIY process makes the shoes look even worst.. The end result makes you look like a wannabe artist/painter who paints day and night wearing Margiela sneakers that got ruined in the process.

I'm not the critical type because those types usually are not cute and I don't want to belong there. I just want to voice this opinion as a way to maybe convince others who might get an idea to DIY their Margiela sneakers like this. Please don't because the end result is not cute, but if I can't convice you, to each his own I guess.

I don't want to demean your efforts for doing this but this DIY styling project does not make any sense to me. Why ruin an expensive designer sneaker.? The original idea is not attractive in the first place and by only achieving mediocre result of the DIY process makes the shoes look even worst.. The end result makes you look like a wannabe artist/painter who paints day and night wearing Margiela sneakers that got ruined in the process.

I'm not the critical type because those types usually are not cute and I don't want to belong there. I just want to voice this opinion as a way to maybe convince others who might get an idea to DIY their Margiela sneakers like this. Please don't because the end result is not cute, but if I can't convice you, to each his own I guess.

I don't think he was going for 'cute'

like Kit said, these aren't Margielas. They are German Army Trainers, for like idk $60?